Ключевые слова: achalasia, ache, angina, angina pectoris, arrhythmia, attack, atypical chest pain, background, breast, bronchitis, burn, cardiac, cardiology, cardiovascular, cardiovascular system, chest, chest pain, clutching at the heart, condition, coronary heart disease, costal chondritis, disease, health, healthcare, heart, illness, lung, male, man, mitral valve prolapse, myocardial, myocardial infarction, osteochondrosis, overeating, pain, palpitation, patient, pericarditis, pleurodinia, pneumonia, problems, reflux, risk, shirt, sick, sickness, stress, stroke, symptoms, ulcer,